Datasheet

584 PHOENIX CONTACT
Sector-specific solutions
Solutions for photovoltaics
In the mix of renewable energies
consisting of wind power, hydropower,
biomass, and geothermal energy, solar
power in Germany, forexample, has taken
the leading position. Throughout the world,
solar energy generation offers the greatest
potential and has enjoyed the most
widespread acceptance.
While standard products can be used in the
AC area of a solar system, a more specific
approach is required for the DC area as a
result of its special structure and
characteristics.
In order to keep cable losses to a minimum,
PV modules are connected to strings,
thereby increasing the system voltage. Non-
load voltages of PV systems reach up to
1000VDC.
These high DC voltages place particular
demands on the components used. In
contrast to AC voltage, the DC voltage that
is present allows creepage distances to be
created very easily on the surface of
insulating elements. The components used
in this area must therefore have increased
air and creepage distances.
In order to limit reverse currents which can
occur in the event of a short circuit, the
individual strings are protected. This
preferably takes the form of 10.3x38mm
fuses in crystalline modules and blocking
diodes incorporated into the circuit in thin-
film modules.
Terminal blocks and fuses from Phoenix
Contact cleverly meet the special
requirements of photovoltaic systems. You
will find a summary of all components in the
“Components and systems for
photovoltaics” brochure.
The corresponding photovoltaic
terminal blocks can be found in the
relevant sections on the respective
connection technologies.